She watched the prairies the rivers, the towns slipping past at an untouchable distance below - and she noted that the sense of detachment one feels when looking at the earth from a plane was the same sense she felt when looking at people: only her distance from people seemed longer. - dagny taggart
Now when i had mastered the language of this water, and had come to know every trifling feature that bordered the great river as familiarly as i knew the letters of the alphabet, i had made a valuable acquisition. But i had lost something, too. I had lost something which could never be restored me while i lived. All the grace, the beauty, the poetry, had gone out of the majestic river!
Time moves only forward, never back. We look forward to a moment and then it arrives and an instant later it is gone. Like something on the surface of a river that we reached for but did not touch in time and it carried on, away. You cannot be a prisoner of your past against your will. Because you can only live in the past inside your mind.